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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-09-23 19:27:42 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-09-27 09:48:53 +0200 |
| commit | 245f44e77101df44e1074c765732b5613579179d (patch) | |
| tree | 693f95401b38e089642993b9229fb6931b82fc68 /include/drm/drm_gem_vram_helper.h | |
| parent | 2ebb6701654e0d625eac6c32832d72f8e875c01a (diff) | |
| download | linux-245f44e77101df44e1074c765732b5613579179d.tar.gz linux-245f44e77101df44e1074c765732b5613579179d.tar.xz | |
drm/vram: Support top-down placement flag
Pinning lots of small buffer objects, such as cursors or sprites, to video
memory can lead to fragmentation, which is a problem for devices with only
a small amount of memory. As a result, framebuffer images might not get
pinned, even though there's enough space available overall.
The flag DRM_GEM_VRAM_PL_FLAG_TOPDOWN marks buffer objects to be pinned at
the high end of video memory. This leaves contiguous space available at
the memory's low end.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20190923172753.26593-2-tzimmermann@suse.de
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'include/drm/drm_gem_vram_helper.h')
| -rw-r--r-- | include/drm/drm_gem_vram_helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 418eb1122861..354a9cd358a3 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -19,6 +19,7 @@ struct vm_area_struct; #define DRM_GEM_VRAM_PL_FLAG_VRAM TTM_PL_FLAG_VRAM #define DRM_GEM_VRAM_PL_FLAG_SYSTEM TTM_PL_FLAG_SYSTEM +#define DRM_GEM_VRAM_PL_FLAG_TOPDOWN TTM_PL_FLAG_TOPDOWN /* * Buffer-object helpers |